On the recognition of soot agglomerate morphology from light scattering/extinction measurements (Articolo in rivista)

Type
Label
  • On the recognition of soot agglomerate morphology from light scattering/extinction measurements (Articolo in rivista) (literal)
Anno
  • 1996-01-01T00:00:00+01:00 (literal)
Alternative label
  • di Stasio S. (1996)
    On the recognition of soot agglomerate morphology from light scattering/extinction measurements
    in Journal of aerosol science
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • di Stasio S. (literal)
Pagina inizio
  • S713 (literal)
Pagina fine
  • S714 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 27 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto Motori, CNR, Napoli. (literal)
Titolo
  • On the recognition of soot agglomerate morphology from light scattering/extinction measurements (literal)
Abstract
  • The optical characterization of soot aggregates containing a high (>100) number of small pseudospherical units (monomers) is topic of interest for many engineers and applied scientists working in the fields of the pollutant control, the radiative heat transfer evaluation in combustion systems, the astrophysical investigation on the interstellar dust, the health research finalized to the assessment of the risk of lung cancer for non-smokers and the study on the properties of new fibrous materials. Each of the previous issues could be easily faced if the particles under test were spherical, homogeneous and Isotropic, thus allowing to adopt the rigorous solutions obtained by Mie (1908) and Debye (1909). In this paper we front with the problem of establishing a criterion to characterize the morphology of the soot aggregates on the basis of the distinctive properties of the scattering pattems without any prior knowledge about the aggregates. We adopt in this work a simplified scalar approach for randomly oriented aggregates, which stems from the consideration of the first-order Bom dipole approximation of the Jones formulation inclusive of an extra selfinteraction term. This approach gives results substantially coherent with the findings by Kumar and Tien. We apply this methodology to compute the scattering pattems obtained for one and two dimensional linear array chains and zigzag chain, and then we compare with the previsions obtained from the mean field theory of Berry and Percival for the fractal clusters, with soot fractal dimensions ranging in (1.49-1.90). (literal)
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